Imageless navigation for insertion of the acetabular component in total hip arthroplasty -: Is it as accurate as CT-based navigation?
Imageless navigation for insertion of the acetabular component in total hip arthroplasty -: Is it as accurate as CT-based navigation?
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DOI：
10.1302/0301-620x.88b2.17163
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发表时间：
2006-02-01
影响因子：
--
通讯作者：
Grifka, J
中科院分区：
文献类型：
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作者：
Kalteis, T;Handel, A;Grifka, J
在一项前瞻性随机临床研究中，髋臼假体被徒手植入（n = 30）或使用基于ct （n = 30）或无图像导航植入（n = 30）。术后通过骨盆CT扫描确定该组件的位置。在传统的徒手放置髋臼假体后，30例中只有14例处于Lewinnek等人定义的安全范围内（40度倾斜SD 10度；15度前倾SD 10度）。在计算机辅助导航后，30个髋臼假体中有25个（基于ct）和28个（无图像）被定位在这个范围内（总体p < 0.001）。ct导航与无图像导航无显著性差异（p = 0.23）；与传统的徒手关节置换术相比，两者均显示髋臼部件位置变化显著减少（p < 0.001）。无影像组手术时间延长8分钟，ct导航组手术时间延长17分钟。无图像导航被证明与使用CT定位髋臼部件一样可靠。
In a prospective randomised clinical study acetabular components were implanted either freehand (n = 30) or using CT-based (n = 30) or imageless navigation (n = 30). The position of the component was determined post-operatively on CT scans of the pelvis.Following conventional freehand placement of the acetabular component, only 14 of the 30 were within the safe zone as defined by Lewinnek et al (40 degrees inclination SD 10 degrees; 15 degrees anteversion SD 10 degrees). After computer-assisted navigation 25 of 30 acetabular components (CT-based) and 28 of 30 components (imageless) were positioned within this limit (overall p < 0.001). No significant differences were observed between CT-based and imageless navigation (p = 0.23); both showed a significant reduction in variation of the position of the acetabular component compared with conventional freehand arthroplasty (p < 0.001). The duration of the operation was increased by eight minutes with imageless and by 17 minutes with CT-based navigation.Imageless navigation proved as reliable as that using CT in positioning the acetabular component.